Sled-propeller.



V. BARTOS.

SLED PROPELLER.

APPLIoATIoN FILED DB0. 29, 1909.

Pate'nted Aug. 30, 1910.

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V. BARTOS.-

SLBD PROPELLER.

APPLIoATIoN HLM DBO. 29, 1909.

968,525. Patented Aug. 30, 1910.

3 SHEETS-SHEET 2.

'ffy/2M V. BARTOS.

SLBD PROPELLER.

APPLICATION FILED DEU. 29, 1909.

Patented Aug. 30, 1910.

3 SHEETS-SHEET 3.

VINGIEN'I.` BARTOS, 0F CHICAGO, ILLINOIS.

SLE!)-PEOTIELLERy Specification of'Letters Patent. i I Patented Aug. 30, 1910.

Application filed December 29, 1909. Serial No. 535,458.

To all whom 'it may concern:

Be it known that I, VINCENT BARTos, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Sled-Propellers, of which the following is a specification. My invention relates to im rovementsin sled propellers and has for its object the production of propelling means for sleds which shall be of simple construction and elicient in ope-ration.

The invention consists in the combination and arran ement of parts hereinafter described andr claimed.

My invention will be best understood by reference to the accompanying drawings forming a part of this specification, and 1n which,

Fi re 1 is a topplan view of a sled provid with propelling mechanism embodying my invention, Fig. 2, an enlarged top planview of the steerin wheel. of said sled, Fig. 3, an elevation of ig. 2, Fig-4, a artial elevation at right angles to Fig. 3, ig.

5, a side elevation of the sled, F1g. 6, an.

enlarged side elevation of one of the sto dogs employed for. preventing retrogra e movements of the runners of the sled, Fig. 7, a longitudinal section of Fig. 6, Fig. 8, an end view of Fig. 6 showing the dog in inoperative position, Fig. 9, an end view of the same showing the dog in operative position, Fig. 10, a section on line of Fi 7, Fig. 11,-a section on line g/-y of Fig. Fig. 12, a longitudinal section of theA sled, Fig. 13, a partial section on line zf-z of Fig. 12, Fig. 14, an enlarged sectional elevation illustrating the mounting of one end of a bearing rail of the sled, Fig..15, a section on lines zo-u vof Fig. 14, and Fig. 16, an enlargedsection of a bearing roller employed in the construction.

The preferred form of construction as illustrated in the drawings comprises a -suitable frame 1 forming the body of the sled and rovided with suitable seats 2 and 2 for the accommodation of passengers. The sled body is provided with bearing rails 3 which have lugs 4 at each end engaging into notches 5 in members of frame 1. A s ring 6 is imprisonedbetween the. upper sid lugs 4 and the top of notches 5 and serves to yieldingly support the sled body on said bearing rails. Rails 3 are provided with bearing strips 7 on their under sides.

The runners 8 of the sled are supported by a pair of hangers 9 taking over rail 10 of the sled body and connected together by bar 11. Rollers 12 carried by hangers 9 bear against the under side of bearing strips 7 on rail 3 at each side. Rollers 12 are preferably mounted on ball bearin s 13 on shaft 14 secured hangers 9. Bu er springs 1 are secured to frame 1 at'either end 'and on each side to contact with the ends of bars 11 at either end of the movement of the runners and thus act as buders for said movement. By this construction it will be seen that the sled body will be yieldingly supported upon runners 8 and that said runners are capable of reciprocation relatively to said body.

Stop dogs 15 and 16 yare pivoted to runners 8. Stop dogs 15 consist of angular members having pointed lower ends 17 adapted to pass through notches 18 in the Yrunners and engage the surface. upon which said runners rest to prevent retrograde movement of said runners. Stop dogs 16 comprise a stirrup frame in which a central bearing piece 19 1s mounted upon pivot 20. At its outer and lower end bearing piece 19 carries a point 21 adapted to pass through a slot 21 in runner 8 and engage a surface beneath said runner. Angular frames 22 are pivoted to bearing member 19 and have downwardly depending arms 23 adapted to swing to either side of the outer-end portion of piece 19. The ends of the stirrup piece of the stop dog are-provided with lugs 24 engaging the inner ends of frames 22. By this construction it will be seen that when do 16 is rocked to cause the point 21 of caring piece 19 to'press against a surface beneath runner 8, frames 22 will be rocked upon their pivot to cause downwardly depending arms23 to swing outwardly at either side of piece 19 as shown in Fig. 9. In case the sled is running over soft snow o1' the like, the spreading'out of arms 23 will ail'ord increased resistance to retrograde movement of a runner 8.

At their upper ends dogs 15 and 16 on each of the runners 8 are pivoted to a bar 25 connected bymeans ofa link2j6 'with the lower ends lof lever, arms 27- and 28. These lever arms are preferably carried by a shaft 29 rotatably mounted across the top of the forward upright 30 of frame 1, and are angularly disposed toward each other as shown in Fig. 5. Each of the arms 27 and 28 is connected by means of a connecting rod 31 with a crank arm 32 on shaft 33 rotatably mounted in frame l1. Shaft 33 carries gears 34 meshing with gears 35 on crank shaft 36 also rotatably mounted in frame 1. Crank shaft 36 is driven by a` suitable asolene engine 37 or other suitable source o power. By this construction it will be seen that upon rotation of shaft 33 lever arms 27 and 28 will be operated to cause alternate reciprocations of runners 8 relatively to sled body. The motion from said levers is rst communicated to stop dogs 15 andv16 causing said dogs to be depressedy `to engage the ice or other bearing surface ,'u'pon which the sled is traveling. This prevents retrograde movement of said runners and consequently the force of the engine is exerted to cause for-' ward travel of said vbody while the runner stands still. The arrangement is such that runners 8 are operated alternately so that while one runner remains stationary to aHord a reaction forthe forward travel of the sled the other runner is carried forward to assume a new position and to continue the foward movement of the sled during the forward travel of the rst runner. Thus it will be seen that the sled will be continually and powerfully urged forward.

At the front 4the sled bodv is provided with a forward extension 3 8 carrying a steering sled 39 pivoted thereto on a shaft 40. At its upper end shaft 40 carries a pulley 41 over which passes a belt or rope 42 also engaging a pulley 43 on shaft 44 in the body of the sled and convenient of access from seat 2. At its upper end shaft 44 carries a steering wheel 45 partially embraced by a supporting bracket 46. An annular set of teeth47 are secured to the top of bracket 46 and are adapted to coperate wth a lever 48 pivoted in the top of shaft 44 to secure said steering wheel in dierent angular positions. A spring 49 serves to normally hold said lever in engagement with said teeth but permits ready disengagement by the operator when it is desiredto change the course of the sled. By this arrangement it will be seen that a course of the sled may be readily directed by an operator seated on seat 2.

The speed of the sled maybe checked by means Vof a brake mechanism which comprises a substantially U-shaped lever 50 pivoted intheV body of the sled and having its downwardly extending limbs Yprovided with short points 51 adapted to engage the surface over which the sled'travels to retard ythe forward movement thereof. Lever 50 carries acrank arm 52 pivoted to a rod 53 threaded in a socket 54 and has an operating handle 55 at its upper end. By this conacatar struction it will be seen that the enga ing point 51 may be depressed or elevat as desired.

while 1 have illustrated and deeeribed the preferred form of construction for carrying my invention into effect this is capable of variation or modification without departing from the spirit of the invention. I, therefore, do not wish to be limitedto the exact details of construction set forth but desire to avail myself of such variations and modification as come within the scope of the appended claims.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a device of the-class described, the combination with a body, of bearing runners mounted to reciprocate relatively to said body; stops carried by said runners and adapted to prevent retrograde movement thereof; and means for 'applying power to said runners throughthe medium of said stops, substantially as described.

2. In a device of the class described, the combination with a body, of bearing runners mounted to reciprocate relatively to said body; stops carried by said runners and adapted to prevent retrograde movement thereof; and means for applying power to said runners alternately through the medium of said stops, substantially as described.

3. In a device of the class described, the combination with a body, of bearing runners mounted to reciprocate relatively to said body; a series of sto dogs pivoted to each of said runners an adapted to prevent retrograde movement thereof; a bar slidable on each of said runners and connected to o erate said dogs; and means on said body or applying power to said bars to reciprocate the same, substantially as described.

4. In a device of the class described, the combination with a body, of a pair of bearing runners mounted to reciprocate relatively to said body; a series of stop dogs pivoted to each of said runners and adapted to prevent retrograde movement thereof; a bar slidable on each of said runners and lconnected to operate said dogs; and means on said body for applying power to said bars alternately to reciprocate the same, substantially as described.

5. In a device of the class described, the combination with a body, of bearing. runners mounted to reciprocate relatively to said body; supporting springs interposed between said runners and said body; buder sprinvs carried by said body and adapted to imit the movements of said runners in either direction; a crank shaft yrotatably mounted in said body; an eXplosive engine adapted to rotate said shaft;

lever arms carried by said body and havin In testimony whereof I have signed my an operative connection with said cran name to this speeiication in the presence of shaft; stop dogs pivoted on said runners two subscribing Witnesses.

and adapted to engage a. bearing surface to VINCENT BARTOS. prevent retrograde movement of said run- Witnesses: ners; and links connecting saidv lever arms JOSHUA R. H. Po'r'rs,

and stop dogs, substantially as described. l W. C. SMITH. 

